Assets Held for Sale Assets Held for Sale	3 Months Ended
Mar. 31, 2014
Assets Held for Sale [Abstract]
Assets Held For Sale [Text Block]	10. ASSETS HELD FOR SALE At December 31, 2013, Great Plains Energy and KCP&L had $36.2 million and $4.7 million, respectively, of assets held for sale related to the construction of two Southwest Power Pool, Inc. (SPP)-approved regional transmission projects, consisting of an approximately 30-mile, 345kV transmission line from KCP&L's and GMO's Iatan generating station to KCP&L's Nashua substation and the Missouri portion of an approximately 180-mile, 345kV transmission line from Sibley, Missouri to Nebraska City, Nebraska. In December 2013, The Federal Energy Regulatory Commission (FERC) accepted the SPP's approval of the novation of these transmission projects to Transource Missouri, LLC (Transource Missouri), a wholly owned subsidiary of Transource. The sale of the assets, at cost, to Transource Missouri was completed in January 2014, resulting in no gain or loss on the sale. Cash proceeds from the asset sale, including a true-up adjustment for the final value of assets sold, were $37.7 million and $4.7 million for Great Plains Energy and KCP&L, respectively.

10. ASSETS HELD FOR SALE

At December 31, 2013, Great Plains Energy and KCP&L had $36.2 million and $4.7 million, respectively, of assets held for sale related to the construction of two Southwest Power Pool, Inc. (SPP)-approved regional transmission projects, consisting of an approximately 30-mile, 345kV transmission line from KCP&L's and GMO's Iatan generating station to KCP&L's Nashua substation and the Missouri portion of an approximately 180-mile, 345kV transmission line from Sibley, Missouri to Nebraska City, Nebraska. In December 2013, The Federal Energy Regulatory Commission (FERC) accepted the SPP's approval of the novation of these transmission projects to Transource Missouri, LLC (Transource Missouri), a wholly owned subsidiary of Transource. The sale of the assets, at cost, to Transource Missouri was completed in January 2014, resulting in no gain or loss on the sale. Cash proceeds from the asset sale, including a true-up adjustment for the final value of assets sold, were $37.7 million and $4.7 million for Great Plains Energy and KCP&L, respectively.